非线性光学晶体Na3La9O3(BO3)8的高功率纳秒激光三倍频特性研究

人工晶体学报 ›› 2022, Vol. 51 ›› Issue (3): 398-403.

非线性光学晶体Na₃La₉O₃(BO₃)₈的高功率纳秒激光三倍频特性研究

唐光鑫^1,2,3, 刘旺^2,3, 王丽荣^2,3, 李云飞^2,3, 张玲^1,3, 张国春^2,3

1.中国科学院半导体研究所,中国科学院半导体材料科学重点实验室,北京 100083;
2.中国科学院理化技术研究所,北京人工晶体研究与发展中心,中国科学院功能晶体与激光技术重点实验室,北京 100190;
3.中国科学院大学,北京 100049

收稿日期:2022-01-10 出版日期:2022-03-15 发布日期:2022-04-11
通讯作者: 王丽荣,博士,副研究员。E-mail:lrwang@mail.ipc.ac.cn; 张玲,博士,副研究员。E-mail:zhangling@semi.ac.cn
作者简介:唐光鑫(1994—),男,山西省人,硕士研究生。E-mail:tangguangxin19@semi.ac.cn
基金资助:
北京市科学技术委员会、中关村科技园区管理委员会资助项目(Z211100004821006)

Characterization of Third Harmonic Generation of High Power Nanosecond Laser on Nonlinear Optical Crystal Na₃La₉O₃(BO₃)₈

TANG Guangxin^1,2,3, LIU Wang^2,3, WANG Lirong^2,3, LI Yunfei^2,3, ZHANG Ling^1,3, ZHANG Guochun^2,3

1. Key Lab of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2. Key Laboratory of Functional Crystals and Laser Technology, Beijing Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2022-01-10 Online:2022-03-15 Published:2022-04-11

摘要/Abstract

摘要： 本文对新型非线性光学晶体Na₃La₉O₃(BO₃)₈(NLBO)三倍频产生355 nm紫外纳秒激光的特性进行了研究。以重复频率10 kHz、脉冲宽度10 ns的高功率1 064 nm调Q激光器作为基频光源,采用I类相位匹配的LBO和NLBO晶体分别作为倍频晶体和三倍频晶体,获得平均输出功率152.5 mW的355 nm紫外纳秒激光输出,为目前采用NLBO晶体获得355 nm紫外激光的最高输出功率。本文还研究了NLBO晶体在实现三倍频最佳输出时晶体偏转角度随温度的变化规律,从实验角度对NLBO晶体在不同温度下的三倍频最佳相位匹配角度进行了修正。

关键词: 非线性光学, NLBO晶体, 三倍频, 相位匹配角, 紫外激光, 激光输出功率

Abstract: The characteristics of 355 nm ultraviolet (UV) nanosecond (ns) laser generation using third harmonic generation (THG) method based on the new nonlinear optical (NLO) crystal Na₃La₉O₃(BO₃)₈(NLBO) were investigated. A Q-switched high-power 1 064 nm laser with repetition frequency of 10 kHz and pulse width of 10 ns was applied as the fundamental laser source. A type I phase-matched LBO crystal was used for the second harmonic generation (SHG) and a type I phase-matched NLBO crystal was used for the THG. The output power of 355 nm UV laser is 152.5 mW, and this is the highest output power of 355 nm UV laser generated by NLBO crystal. The variation of the crystal deflection angle with temperature when the NLBO crystal achieved the optimal THG output was studied, and the optimum phase matching angles at different temperatures were modified.

Key words: nonlinear optics, NLBO crystal, third harmonic generation, phase matching angle, ultraviolet laser, laser output power

中图分类号:

O734

唐光鑫, 刘旺, 王丽荣, 李云飞, 张玲, 张国春. 非线性光学晶体Na₃La₉O₃(BO₃)₈的高功率纳秒激光三倍频特性研究[J]. 人工晶体学报, 2022, 51(3): 398-403.

TANG Guangxin, LIU Wang, WANG Lirong, LI Yunfei, ZHANG Ling, ZHANG Guochun. Characterization of Third Harmonic Generation of High Power Nanosecond Laser on Nonlinear Optical Crystal Na₃La₉O₃(BO₃)₈[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(3): 398-403.

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非线性光学晶体Na₃La₉O₃(BO₃)₈的高功率纳秒激光三倍频特性研究

Characterization of Third Harmonic Generation of High Power Nanosecond Laser on Nonlinear Optical Crystal Na₃La₉O₃(BO₃)₈

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